In iOS, selected cell should move to top portion without any disturbance in UITableView

Question

I asked one doubt yesterday, here at this link

In that I got 4 answers. Those 4 answers helped me to solve my problem. But now in same scenario, I have another issue. When I open 3rd cell it opens in same place.

enter image description here

I want to close that cell, so I press the button then it closes successfully. but the issue is after closed, it goes to top position.

enter image description here

How to solve this issue. I think I did mistake in calling this method scrollToRowAtIndexPath. In my previous question, (Refer the 1st line link) I changed a single line in below described method.

- (void)method_Expand:(UIButton*)sender
{
    int_SelectedIndex = sender.tag;
    [tbl_CalendarList scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:int_SelectedIndex inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:YES];
    NSLog(@"Selected Button : %ld",(long)int_SelectedIndex);
    if ( int_TempSelectedIndex != int_SelectedIndex)
    {
        int_TempSelectedIndex = int_SelectedIndex;
    }
    else
    {
        int_TempSelectedIndex = -1;
    }
    [tbl_CalendarList reloadData];
}

enter image description here

Where do you call your `method_Expand` - each time the cell is tapped? — Rok Jarc, Jan 25 '14 at 11:11
In cellForRowAtIndexPath method. Just see my previous Question. http://stackoverflow.com/questions/21329857/in-ios-selected-cell-should-move-to-top-portion-in-uitableview — Muthu Sabarinathan, Jan 25 '14 at 11:13

score 1 · Accepted Answer · edited May 23 '17 at 11:49

According to your previous question your method_Expand: is called when custom in-cell button is tapped. Try changing your code to:

- (void)method_Expand:(UIButton*)sender
{
    int_SelectedIndex = sender.tag;

    NSLog(@"Selected Button : %ld",(long)int_SelectedIndex);

    if ( int_TempSelectedIndex != int_SelectedIndex)
    {
        int_TempSelectedIndex = int_SelectedIndex;

        [tbl_BlogList scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:int_SelectedIndex inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:YES];
    }
    else
    {
        int_TempSelectedIndex = -1;
    }
    [tbl_CalendarList reloadData];
}

This way tapped cell will scroll to top only when it is being expanded and not when it is being collapsed.

EDIT: there is another way

- (void)method_Expand:(UIButton*)sender
{
    int_SelectedIndex = sender.tag;

    NSLog(@"Selected Button : %ld",(long)int_SelectedIndex);

    if ( int_TempSelectedIndex != int_SelectedIndex)
    {
        int_TempSelectedIndex = int_SelectedIndex;
    }
    else
    {
        int_TempSelectedIndex = -1;
    }

    [tbl_CalendarList reloadData];

    if (int_TempSelectedIndex >= 0)
    {
        dispatch_async(dispatch_get_main_thread(), ^{
            [tbl_BlogList scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:int_SelectedIndex inSection:0]
                                atScrollPosition:UITableViewScrollPositionTop
                                        animated:YES];
        });
    }
}

Source: this answer

Its fine. but 3rd cell is in open state. now i select 5th cell, now that cell is not going to top position. In this same question i add that image at last. — Muthu Sabarinathan, Jan 25 '14 at 11:23
oops - the scrollTo... line should follow the one setting the index. i changed the answer. — Rok Jarc, Jan 25 '14 at 11:26
i understand ur answer. my question is, one cell is expanded. am not collapsed it, now i want to open another cell. at that time this issue is raised. — Muthu Sabarinathan, Jan 25 '14 at 11:26
Ya tried it. but newly selected cell is not coming to Top Position. — Muthu Sabarinathan, Jan 25 '14 at 11:31

In iOS, selected cell should move to top portion without any disturbance in UITableView

1 Answers1